PUTZ calculates dose rates from three-dimensional photon sources in a three-dimensional system. The code allows the specification of the source and body geometries as simple parallelepipeds and annular parallelepipeds (tanks) and permits the inclusion of multiple sources and multiple detectors in a single case. The shielding bodies may consist of up to 6 materials.

The point-kernel method employs the Geometric-Progression (GP) formula for the buildup factor. The GP coefficients and attenuation coefficients, taken from the ANSI/ANS-6.4.3-1991 compilation, are read from a data file. An optional multimaterial (composite) buildup factor formula may be used. The FIDO input system is used which allows easy entering or modifying the various input arrays.

The code was written in Fortran 77 and was tested using the Microsft version 5.0 compiler. For implementation on other systems, the OPEN statements are placed in one subroutine (SETIO).

CCC-0595/02

The program was compiled using the Lahey F77L3-EM32 Version 4.02 Fortran-77 compiler and linked with the Lahey LINK-EM/32 Version 2.06 linker in connection with the Lahey/Ergo OS/386 DOS Extender Version 4.02. The PC ran under MS-DOS 5.0.